Ferdinand brunbauer



(Model.) y

F. BRUNBAUER.

INJECTOR.

No. 369,097.'- Patented Aug. so, 1887.

UNITED STATES PATENT EEicE.

FERDINAND BRUNBAUER, OF VIENNA, AUSTRIA-HUNGARY. j

I NJ E cTo R.

SPECIFICATION forming part of Letters Patent No. 369,097, dated August30, 1887.

Application filed March QS), 1887. Serial No. 232,923. (Model.) Patentedin Germany July 3, 1885, No. 36,938; in France'July 3, 1885, No.169,922; in Belgium July 3, 1885, No. 69,475; in England July 3, 1885,No.8,098; in Austria-Hungary August 3, 1885, No. 19,027 and, No. 40,938;in Italy September 30, 1885, XIX, 18,629, and XXXVII, 153, and in SpainNovember 3, 1885, No.

To @ZZ whom it 'may cori/067%: l

Betknown thatI, FERDINAND BEUNBAUER, engineer, a subject of the Emperorof Austria- Hungary, residing atVienna, in the Province of LowerAustria, in the Empire of Austria- Hungary,have invented certain new anduseful Improvementsinlnjectors; and Ido hereby declare the following tobea full, clear, and exact description of the invention,such aswillenable others skilled in the art to which it appertains to make anduse the same, reference being had to the accompanying drawings, and toletters or figures of reference marked thereon, which form a part ofthis'specication.

This invention relates to a new and useful improvement in injectors forfeeding-boilers; and it consists in the peculiar arrangement andconstruction of the parts, ashereinafter described, and pointed ont inthe claims.

The object of my invention is to construct an injector in such a mannerthat its starting and its internal parts are more simplified and itsoperation rendered more reliable. For this purpose the 'injector isprovided with two steam-tubes, one of them concentrically inclosing theother, the outer one of which tubes (whose passage, in consequence ofthe said arrangement, is of annular section,iand which actsimmediatelyafter the opening of the boiler steam-valve) operates the sucking in orsetting in motion of the water, while by a subsequent adjustment of astarting-lever, or by other means, the movable inner tube is retiredfrom a fixed conical valve, (until this moment closing the latten)whereby steam is permitted to also enter the inner or main steam-tube,

by which the pressure and the velocity of the water are increasedsnficiently to lift the check-valve of the boiler. In the second of thetwo stages of the starting of the injector a startingvalve or stop-cock(through which the initial waste of water escapes from the outer shellor casing of the instrument) is closed by a system of cranks and linksconnected either to the starting-lever or to other means for removingthe inner tube.

To allow the two concentric steam-tubes to be operated in the aforesaidmanner, I construct the inner or main steam-tube to be always movable inits axis for the purpose of retiring the same from the fixed conicalvalve, while the outer steam-tube may either be made fixed or bemovable, in which latter case it ina-y be removed by the adjustment ofthe inner tube, or by any other means.

For the. reliable operation of this injector it is necessary toconstruct the injector and the starting valve or cock in such a mannerthat in starting the instrument the steam and water may partly escapefrom the overflow-chamber and partly from the discharge-chamber. I amaware that there are other constructions of injectors for this purpose;but I have found it necessary that this double escape of the jet ofcondensed steam and water should be completely separated from each otherin one and the same starting-valve.

Injectors embodying my invention are represented in the annexeddrawings, as follows:

Figure 1 is a sectional elevation of an injector having the movablecentral steam-tube, a iixed outer tube, and the starting-lever incombination with the starting-valve.- Fig. 2 represents in a similarelevation another construction of the starting-valve. Fig. 3 is asectional elevation of an injector similar to that shown by Fig. 1, buthaving both steamtubes rigidly connected to each other. Fig. 4t is asectional elevation of an injector, also similar to that shown in Fig.l, but exclusively arranged for upward action, and having its movableinner steam-tube adapted to belifted by steam-pressure. lied part ofFig. 4. v

yIn Fig. l the casing a of the injector communicates by its aperture awith the pipe conveying the bOilersteam, and its aperture communicatingwith the boiler contains a valve, f, kept closed by the boiler-pressure.The diaphragm between the steam-chamber a3 and the water-chamber a5 hasthe ixed outer steam-tube, b, rigidly inserted in a correspondingopening. In the axis of said tube b the main steam-tube c is endwisemovable.

Fig. 5 represents a modirIhe central steanrtube, c, is guided at one g5IOO k, forming at one end a conical face or valve, by which the strokeof the steam-tube c is limited, as the corresponding end of said tube cis ground out like avalve-seat and enabled to be tightly forced onto theaforementioned conical 'face k.

For adjustingthe main steam-tube c acrankpin, f', is provided,projecting from a short shaft, 1", which extends into the casing cthrough a stuffing-box. The crank-piaf engages with a guide, c3, formedon the steamtube c. On its outer end the shaftf carries a hand-leveigfl,and by means of a crank, f, and a connecting-mdd, said shaft isconnected to a crank, g', rigidly fitted on the plug (jz of astarting-valve, which allows the exit of the water during the stage ofdrawing the water or setting it in motion. The casing g of saidstarting-valve is constructed in such a manner that during the startingot' the injector a double completely separated escape of the mixture ofcondensed steam and water is provided. For this purpose the plug g,forming on its bottom end a conical valve, g3, is inserted in the topend of another valve, g, which valve is constructed like a tube withpassage g, and forms a valve-seat, g, adapted to act in correspondencewith valve g3.

The aforementioned conical valve g4 acts in correspondence with aconical valve-seat, f/l, of the starting-valve easing g, and forms withsaid casing another passage, g8, of ring-shaped section. In twodiaphragms of the casing a are rigidly inserted the combining-tube withthe delivery-tube j, made in one piece, though an open space foroveriiow or relief is left between said tubes. During the starting ofthe injector the overflow-chamber a communicates with the passage ga ofring-shaped section, while the discharge-ehamber al is also incommunication with passage gf. NVhen the hand-leverf2 is in the positionshown by Fig. 1, the inner tube, c, is pressed against the conical facek, and the steam entering at a is only permitted to issue through thesteamway of ring-shaped cross-section formed between the outersteam-tube, I), and the inner steamtube, c. In consequence thereof thedrawing or the setting in motion of the water begins. The steam andwater then enter the combining-tube i, formed integral with thedeliverytube j, and escapes into the atmosphere partly through theoverow-chamber a and passage g3, and partly through thedischarge-chamber aT and passage Vhen the hand-leveris turned through anangle of about ninety degrees, the main steam-tube c is removed from theconical face k, and therefore steam is permitted to issue also throughthe inner tube, c, while at the same time the starting-valve is closedat gl and g". The double escape of the steam-and-water mixture thereforeceases, and the pressure or velocity of the jet of steam and water israised suiiiciently high so as to overcome the pressure in the boiler,so that the valve a is forced down and the water fed into the boiler.

rIhe starting-valve shown in Fig. 2 is con- Structcd in a littlediii'crent manner from that represented in Fig. l; but the parts beingpeculiar to both constructions are indicated with similar letters. Herethe plug gZ of the startingvalve forms itself the two valves y" andg,ai1d a diaphragm, y, is adapted to separate the two escapes g5 and gfrom cach other.

The injector shown by Fig. 3 is quite similar to that shown by Fig. l,with the sole difference that'both steam-tubes are rigidly connectedtogether, and the outer tube, b, which is provided with a packing, b',is movable in the aperture of the diaphragm between the steam-chamber aand the water-chamber a".

The use of the conical face k for keeping closed the main steam-tube cis of special advantage in injectors intended to force the liquidupward,like that shown by Fig. 4, which figure is to be turned ninetydegrees, so that the pin cis at the bottom end of the injector. In thismodification the lower end of the inner steam-tube, c, rests from theaction of gravity upon the Iixed screw-plug k, and when the boiler-steamis allowed to enter through the aperture a said st eam contributes totightly force the tube c onto the plug 7c. Afterward, when the pin k ispressed inward, it strikes against the cross-pin or tappet cgiixcdwithin the tubec, and as soon as this tube is somewhat lifted theentering steam will fully lift it. The lifting of the tube c can,however, also be effected exclusively by the entering steam, as theimpulse given to said tube by pin L can be avoided by the modiiiedconstruction shown by Fig. 5. h is here the screw-cap containing theaforementioned Xed conical plug 7c, which in this case is made with ahollow space having steaminlet apertures 7a2 and steam-outlet aperturekf. rIhe pin 7c is formed with a conical end, which is enabled to closethe outlet aperture 7c3. W'hen the boilersteam is allowed to enter thesteam-chamber of the injector, the steam contributes, as in Fig. 1I, totightly force the tube c onto the plug la. Afterward, when the pin lo isa little unscrewed, a sufiicient quantity of steam is permitted to enterthe tube c and to lift it somewhat, and the larger quantity of steam nowentering the tube c between the end of this tube and the conical face kwill fully lift said tube c.

I claiml. In an injector with two concentric steamtubes, the inner oneof these tubes being endwise movable, forming between them asteamway ofring-shaped section, and adapted to operate a fixed cut-olf valve by themovement of the inner tube, the combination, with said tubes, of a fixedconical Valve for the inner tube, a valve-seat on the movable inner tubeadapted to act in correspondence with said Iixed conical valve, andmeans for the adjustment of thetube, substantially as and for thepurpose set forth.

2. In an injector with two concentric steamtubes, the inner one oftl1ese tubes being end- IOO IIO

wise movable,forming between them a steamway of ring-shaped section, andadapted to operatea fixed cut-off valve by the movement of the innertube,the combinatiomwith said tubes b'and c, of a fixed conical valve,k, for the inner tube, c, a valve-seat on the movable inner tube, c,adapted to a'ct in correspondence with said xed conical valve k, and pink', for the purpose of shifting the tube c by steam-press ure,substantially as described.

3. In an injector with two concentric steamtubes, the inner one of thesetubes being end- Wise movable, forming between them a steamway ofring-shaped section, and adapted to operate a fixed cutoff valve by themovement of the inner tube, the combination, with said tubes, of a fixedconical valve for the inner tube, a valve-seat on the movable inner tubeadapted to act in correspondence with said fixed conical valve, meansfor the adjustment of the tube, and a starting-valve for doublewater-escape, containing a valve for closing the outlet from theoverflow-chamber, and a second valve for closing the exit from thedischargechamber, all connected and operating substantially asdescribed.

In'testimony whereof I affix nly siguaturein presence of two witnesses.

FERDINAND BRUN BAUER. Witnesses:

EDMUND JUssoN, OTTO SOHIFFER.

